After moving the site I can not edit post, pages ....

I've moved the site from a folder in the root, as described in the link http://codex.wordpress.org/Moving_WordPress
When Your Domain Name or URLs Change
after that I can not edit post, pages and theme option.
Like change the logo, background image and more. Does anyone have an idea what the problem is?

That's NOT a free hosted WordPress.COM blog and we do not provide support for it here. You are posting to the wrong support forum. WordPress.com and WordPress.org are completely separate, have different log-ins and run different versions of themes with same names. http://support.wordpress.com/com-vs-org/

We provide support only for free hosted WordPress.COM blogs and not for WordPress.org software installs. If you don't have a username account at WordPress.ORG click http://wordpress.org/support/ and register one on the top right hand corner of the page that opens, so you can post to the support forums there and receive advice from WordPress.ORG bloggers.